> On Sun, 31 May 1998, Colin Plumb wrote:
>
> > Um, unfortunately that won't work. let me give a simple example:
> >
> > asm volatile("... trashing %ecx ..." : "=r" (*out) : "r" (in));
> > asm volatile("" : : : "cx");
> >
> > The problem is that GCC might decide to store "out" in ecx and, between the
> > two asm statements, "movl %eax,(%ecx)". Which, of course, won't work.
> >
>
Yup, no bout a doubt it, you're right :))
I built an (home made) updated pgcc yesterday and fed it the kernel
at O6 to test. Gueeeess where it croaked.. checksum.c!
What was that quote about lying to your compiler again? <g>
-Mike
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